tonsils have craters. its normal as long as there is no pain. craters are there to capture bacteria and sometimes white chunks form inside them which release and can cause your mouth to have a horrible odor and taste. if you prod the white spots they can sometimes be forced out. they are called tonsil stones.

The clicking noise is probably just saliva being pushed into the crater. That's good there are no white things, but be aware that white things could form called tonsil stones. Nothing to worry about at all.